Experimental and Numerical Simulation of the Dynamic Response of a Stiffened Panel Suffering the Impact of an Ice Indenter

Abstract

At a laboratory scale, the response of a stiffened panel subjected to the impact of an ice indenter was studied by both experimental and numerical means. The experiment was conducted using a Falling Weight Impact Tester, and the impact force and deformation data of the stiffened panel were measured and recorded. The experimental results showed that the ice indenter could cause significant indentation to the stiffened panel and experienced severe crushing and scattering itself. Finite element analysis was performed to reproduce the structural deformations in an appropriate manner, and a constitutive model with a multisurface yield criterion and a dynamic empirical failure criterion for ice material was developed. Good agreement was obtained, and the influences of various parameters in the constitutive model and the performance of other different material models are discussed. The purpose of this study is to present an experimental and numerical study on a scenario of high-energy collision between a hull structure and an ice block, the conclusions of which can be very useful for studying ship-ice collisions and guiding engineering applications.

Experimental Evaluation and Validation of Pressure Distributions in Ice–Structure Collisions Using a Pendulum Apparatus

“…The collision forces measured in this study were compared with results from other studies [10,11,[13][14][15][18][19][20] that employed different methods, such as pendulum collision, trolley collision, and free-drop collision. Figure 24 illustrates the scatter of collision forces according to the collision velocity and collision energy.…”

“…Researchers have employed different experimental setups for this method. For example, Choi et al [10], Yu et al [11], and Quinton [12] used the free-drop collision method by dropping an ice specimen onto a steel plate to measure the force transferred to the plate. They varied the collision velocity from 1.5 to 10 knots and the angle of the ice wedge from 0 to 45 • .…”

Experimental Research on Dynamic Behavior of Stiffened Plates under Drop-Weight Impacts of a Wedge Impactor

“…Zhu L, et al [24] established a curved impact test rail, investigated the dynamic responses of rectangular plates under the impact of a wedge-ice impactor and compared elastic-plastic responses of plates under the impact of a ridged wedge striker and a brittle ice-wedge striker; the plastic responses of aluminum foam-filled sandwich panels under wedge-ice impact were also investigated [25]. Yu TQ, et al [26] investigated the dynamic responses of stiffened panels under the impact of a brittle wedge-ice impactor.…”